Dispensing apparatus



Jan. 16, 1934. JACKSON 1,944,137

DISPENSING APPARATUS Filed July 24, 1933 2 Sheets-Sheet ENTOR R0 ACKSON ATTORNEY Jan. 16, 1934. R. JACKSQN 1,944,137

DISPENSING APPARATUS Filed July 24, 1933 2 Sheets-Sheet 2 gll INVENTOR ROY JACKSON Mam ATTORNEY Patented Jan. 16, 1934 UNITED STATES wa st PATENT OFFC DISPENSING APPARATUS Application July 24, 1933. Serial No. 681,829.

20 Claims.

This invention relates to dispensing apparatus. One of the particular applications of the invention to be discussed is found in the dispensing of liquids under pressure much higher than,

fi atmospheric, as, for instance, where the pressure head is greater than a head of liquid of a few feet. Another factor involved in the specific application of the invention discussed herein is the dispensing, in proper quantities, of beverages which easily froth, liquids which, when dispensed by customary dispensing apparatus, are delivered. in charge without control of the fret-hing, or for which, by such apparatus, the

frothing effect has been so completely destroyed that, when delivered to the customer, they appear fiat.

The invention was developed specifically fo the dispensing of beer. The frothing property of this liquid is common knowledge. If mechanical appliances are substituted for the wellknown bar-tender, with consequent loss of his dexterity in securing a proper head for each charge of the liquid, either of two results may ensue. The charge may be agitated by the apparatus to such a degree that the charge will be composed totally, or to a large degree, of froth. On the other hand, if agitation is eliminated, froth, as a component of the charge, disappears completely. There is dispensed a fiat liquid which the customer may well consider a stale beverage, something which may not, in fact, be the case.

It is an object of the invention to provide apparatus for dispensing, without the necessity for skilled labor, liquids whose properties include the normal tendency to produce froth when agitated even slightly. The invention is described herein in connection with the dispensing of beer, the apparatus described being capable of application to control by mechanism including a coin-controlled look. In such case, skilled labor is not a factor. Deposit of a coin, the turn of a crank, or actuation of similar movementinitiating means, is the only manipulation on the part of operator; the apparatus itself then effects the necessary dispensing operations. The apparatus itself is made to emulate, at least in results secured, the skill of the mannual dispenser, so that a proper charge of the liquid, with froth and liquid in properly related proportions, will be delivered into a receptacle properly arranged for that purpose.

To dispense beverages under pressures greater than a few inches, or even a few feet, of liquid head, the trap-chambers normally required for separating charges of liquid into the dispensing of predetermined quantities, as here dealt with, cannot be used. At least, to construct properly such elements as vents for the chambers, introduces factors such that, for small charges especially, such constructions are eliminated from consideration. It is an object of the invention to provide apparatus in which the dispensing of beverages under pressure, and, especially frothing beverages, may be accomplished without vents of the character indicated, without relation to the size of the charge involved.

In effecting the objects of the invention, the beverage, under pressure, is led over to the dispensing apparatus. In this apparatus may be included charge-forming members of any desired type. In the apparatus described, a chamber is brought successively into cooperation with the line supplying liquid under pressure, and with a discharge outlet at which the container to be filled is positioned. When the chamber is in communication with the supply line, it also is connected, by means of a vent, with a device which, in turn, is also connected to the supply line. This device functions to compensate for difierences in pressure in the feed-line so that a complete charge, in which froth and liquid are properly proportioned, is segregated. A chamber whichforms a part of the device, in association with other. elements, provides a positive vent for the measuring chamber. By this device, discharge of fluid directly from the supply line or from the chamber of the device, is prevented. It may occur only through a proper outlet not connected with either. By certain relationships of elements to the chamber of the device, it may be made to govern the proportion of froth and liquid finally disposed within the measuring chamber after a charge has been completely separated.

It is an object of the invention to provide means for signalling automatically the condition of the supply-line. Where the means for placing the fluid under pressure is pneumatic, when the tank or similar container, holding liquid to be dispensed, has been emptied, the gas under pressure will have clear passage through the supply-line and into the chamber of the device. This medium may be used to operate certain elements to create an alarm or to actuate a proper indicator, giving warning of the condition of the supply.

Other objects of this invention will hereinafter he set forth, or will be apparent from the description and the drawings, in which is illustrated an embodiment of apparatus for carrying out the invention.

The invention, however, is not intended to be restricted to any particular construction or arrangement of parts, or to any particular application of such construction, or to any specific method of operation or manner of use, or toany or" various details thereof herein shown and described, as the same may be modified in various particulars or be applied in many varied relations without departing from the spirit and scope of the claimed invention, the practical embodiment herein illustrated and described merely showing one of various forms in which the invention might be embodied.

On the drawings, in which the same reference characters refer to the same parts throughout, and in which is disclosed such an embodiment:

Fig. 1 is a diagrammatic view, illustrating the lay-out system embodying the invention, the main supply line being shown broken away and disposed at two levels, in order to make the illustration more compact;

Fig. 2 is an elevational view of a measuring chamber and associated elements which may be used in association with the apparatus shown in Fig. 1, portions being broken away to show the efiective portions thereof;

Fig. 3 is an end elevational View of the measuring chamber assembly;

Fig. 4 is a horizontal cross-sectional view, on the line 44 of Fig. 2, but only through the plug of the valve;

Fig. 5 is a similar crosssectional view, on the line 55 of Fig. 2;

Fig. 6 is a vertical cross-sectional view through the control apparatus, portions being shown in elevation and other portions being broken away in order to illustrate clearly the construction and operation of that apparatus,

there being shown connected to the control apparatus an external element for signalling the condition of the system;

Fig. 7 is a plan View of the control apparatus shown in Fig. 6, the top plate and its movable parts being removed; and

Fig. 8 is a horizontally transverse cross-sectional view, on the line 8-8 of Fig. 6, portions being omitted to clarify the disclosure.

In the apparatus 10 illustrated, a keg 12 contains a supply of beer or similar fluid. Through the bung is driven a customary assembly 14, providing an inlet for a pneumatic medium such as air from a proper source. The fluid is discharged from the keg into a supply line 16, which extends and is connected to a dispensing unit 18. Supply line 16, in Fig. 1 is broken away, and shown at two levels, with the intention of indicating a common condition, that is, that the keg is positioned below the point at which the beverage is dispensed. Unit 18 may include a plurality of measuring chambers 20, inlet to and outlet from which are controlled by a valve 22. Located above chambers 20 and arranged to form a by-pass between line 16 and unit 18 is control apparatus 24; this apparatus may be connected by a conduit 26 to line 16, and by a riser 28 to unit 18. The section of line 16 between the branch leading to apparatus 24 and unit 18 is shown horizontally disposed; in practice, it has been found convenient and desirable tohave this section extend upwardly from its intersection with the branch to apparatus 24 to its connection with unit 18.

Specific elements of the dispensing unit are illustrated merely to clarify application of the invention. The invention, as it will appear, may, however, have application in cases even where dispensing, either of predetermined quantitles, or of quantities not predetermined, without the use of this specifically disclosed structure, takes place.

Unit 18 may be made up in any desired manner. The particular construction here shown includes a casting 30 upon which a. pair of walls 32 may have been faced. Measuring chambers 20, in such case, may be retained against these walls in any desired manner, as, for instance, by bolts and nuts. Each of walls 32 may have a pair of ports, the one at the lower level being indicated as 34, and the one at the upper level as 36. The casting may be bored, the bore preferably being tapered downwardly to provide a seat 38 for receiving a plug 40. Ports 34 and 36 extend through the casting and open at the seat.

In addition to the ports described, additional ports 42, 44, 46 and 48 may open at the seat mid-way between pairs of ports 34 and 36. Ports 42 and 44 are connected to two nipples 50 and 52 to which, respectively, are connected supply line 16 and riser 28. At port 46 is associated a nipple 54- which may be connected to any suitable discharge means such as a nozzle (not shown), through which the fluid may be delivered into the customers container. Port 48 is, at all times, open to the air.

In plug 40, a plurality of passages provide connection between pairs of ports, in this case, between ports 56 and 58, ports 60 and 62, ports 64 and 66, and ports 68 and '70, respectively. The relative disposition of ports and passages is such that, when ports 56 and 58 are in registry with the port 36 of one wall and with port 44, ports 60 and 62 will be in registry with the associated port 34 and port 42. In like manner, at the same instant, the port 34 of the other set and port 46 will be in registry with ports 68 and 70, while port 36 of that set and port 48 will be in registry with ports 64 and 66.

The result will be that liquid may flow from the supply line into nipple 50, through the port associated therewith, into one of the chambers, and then out through the other nipple 52 up riser 28 to the control apparatus. At the same time, liquid in the other chamber will flow out through nipple 54, the chamber being vented through port 48.

By rotating the plug through an angle of 90, the relationship of the chambers is reversed so that the empty chamber will be filled, and the filled chamber, emptied. The plug may be connected to apparatus to rotate it continuously in one direction, or to oscillate it back and forth into its several positions. substantially the same resultant effect will be secured. Apparatus, connected to the plug for rotating it, may be completely controlled by coin looks or similar means so that dispensing of the beverage may be efiected only when a proper sum'of money, set for that operation, been deposited in the apparatus for that purpose.

Control apparatus 24 may be constructed with a base "72 and a head 74. Positioned between the head and base may be a cylinder 78, defining a f 1.

chamber 80. Between the base and head, so spaced apart, are extended a plurality of rods 76 retained within lugs or similar portions of the respective base and head. These rods, by suit- In either of these cases, 1'.

able securing members associated with them, as,

for instance, nuts threaded on the rods, retain head, base and cylinder in a definite association.

The cylinder may be of glass or similar transparent material, making apparent to an operator the condition of the apparatus within the chamber. Suitable seats 82 and 84, formed in base and head, respectively, provide for the reception of means, such as a gasket, against which the cylinder will be pressed to make chamber liquid tight. Conduit 26 isconnected to deliver fluid to chamber 80 through an inlet 86 in base 72.

Within chamber 80 is a float 88, here shown as a sealed metal container at the upper end of which are provided a pair of lugs 98 through which a rod 92 may be passed and a pin 94 to retain the float associated with therod. The rod may be guided in properly aligned openings through arms 96 of a bracket 97, the bracket being secured to head 74. The upper end of the rod may have an enlargement 100 providing a stop against downward movement for the assembly, the enlargement coming into abutment with top arm 96 to limit such downward movement.

The enlargement may include a cup 102 within which is seated a portion of compressible material 104. This compressible material, on upward movement of the float, engages against the bottom tapered face 106 of a vent-element 108. A passage 110, opening at face 106, is sealed by the contact of material 104 against face 106. This passage opens into a chamber 112 within the head. 1

Leading out of the chamber is a conduit 114, which may be controlled by a pet-cock 116. Beyond the pet-cock the conduit extends to and terminates in a nozzle 118, here shown as fixedly retained in a flange extension of head 74. The nozzle terminates in a tapered end 122 located for proper cooperation with compressible or similar sealing material in a cup 124 carried by an arm 126.

As liquid enters chamber 80 from conduit 26 and, therefore, from supply line 16, at a deflnite level, material 104 will engage against face 106. Thereupon, the free venting of air from chamber 80 will be cut off. Entry of fluid into that chamber thereafter will only be with resultant compression of entrapped gases. As a factor in determining the amount of fluid in chamber 80, or, at least, the degree of agitation of fluid as that chamber is filled, is the speed of gases through vent-element 108. If the passage of gases through the vent-element, or through conduit 114, be impeded in any manner, then the flow of fluid into the chamber will, in like manner, be obstructed, and the surging of liquid around the float restricted. The float, as shown, occupies a material portion of the volume of the chamber in which it is housed, being spaced away from the cylinder but a small distance.

Extending down into chamber 80 and terminating short of the topmost position of float 88 is an overflow line 128. This line extends through head 74 into, but has no communication with, chamber 112, extending out of the chamber and downwardly into a downwardly directed section for connection to riser 28. When an empty chamber 20 is positioned so that its ports lead to supply line 16 and riser 28, it has been observed that liquid in the riser first overflows into chamber 80 through overflow line 128. At the same time, the release of pressure at the control apparatus, by thus disposing the .empty measuring chamber, causes liquid to flow out through inlet 86 to supply line 16. This flow is of a suflicient extent to cause the float to drop, releasing engagement between material 104 and face 106. Air in chamber 20 may then flow up through the riser into chamber 80, through vent-chamber 108, and then onwardly to discharge at nozzle 118. When chamber 20 is filled, liquid flows up through the overflow line and into chamber 80. By' this time, the float has seated material 104 against face 106. After the system has recovered from the reduced pressure, caused by registration of the empty measuring chamber, fluid also flows up through conduit 26 into chamber 80, finally lifting the float sufficiently to cut the venting action long before liquid actually fills the overflow line, and before any such liquid can get into chamber 112.

Arm 126 may have the function of controlling the rate of filling of chambers 20 and 80, in the manner to be described. Head '74 may be closed by a cap plate 132, through which, and a boss 134 formed thereon, is provided an opening 136. A pin 138, extended through this opening, may have a plate secured thereto at its inner end. Clamped between plate 132 and the flanged top of head 74 is a diaphragm 142, flexible in character and normally in engagement with plate 132. A hearing for a pivot pin 144 may be provided by a pair of lugs 146 disposed on plate 132. Pin 144 carries arm 126 so that it extends transversely of the head and bears against the top end of pin 138. The arm may be weighted, as, for instance, by a suitable weight 147 at its end, the weight being either fixed or adjustable, as desired.

The end of the arm removed from the weight may take the form of a finger 148. A threaded pin 150 extended through a threaded opening 152 through the finge'r'carries, at its bottom end, cup 124. A look nut 154 may be associated with pin 150 to fix the relationship of the cup to the end of nozzle 118.

When air is discharged into chamber 112 from vent-element 108, the pressure in chamber 112 will increase. If the pressure rise sharply, the diaphragm will be pushed upwardly, driving pin 138 against arm 126. the action of weight 147, will cause material in cup 124 to be pressed against the end of the nozzle. The engagement of material and nozzle end may, if desired, be made of graduated effect for introducing a variable control for the air flow, and, therefore, for the liquid flow. However, simply to cut off all flow, the time of cutoff being determined by the distance through which the cup must move to contact with the nozzle end, has been found of sufiicient effect for a control asto be described.

Since the position of the cup with relation to nozzle is made adjustable, the time interval necessary for movement of the cup against the nozzle may be varied so that, by this adjustment of the position of the cup, the instant of cut off of air venting may be caused to assume a different relation to the moment at which flow into an empty chamber is commenced.

Engagement of nozzle and cup, while, to a '5 The arm, lifted against of course, a matter of differential pressures, with,

an increase in the pressure of the entrapped gas, and the resultant decrease of the differential pressure, will likewise decrease, and finally reach I a state of equilibrium. By determining the instant at which there takes 'place this change from a condition under which flow of liquid is resisted only by the atmospheric factors and;

friction of gas moving through the vent, to one nvolving a differential pressure, as the entrapped gases are compressed, it has been found possible to control the proportion of froth within the" chamber, and, likewise, within the measuring chamber, the filling of themeasuring chamber depending upon the venting action of chamber 80. As agitation of the charge delivered from the measuring chamber will be determined only by the difference in levels of nozzle and container, as gravity, resisted by viscosity, will be' directly into supply line 16 and, therefore, into As insufficient liquid will, insuch case, be present in the chamber, flow of air into the chamber will be unrestricted by the float.

chamber 80.

The outlet at nozzlel 118 will be closed as the diaphragm is lifted under this rapid influx of air.

158, through a duct 160, is connected toindicating apparatus 162. This apparatus may consist of some suitable signalling element, such asa suitable sound-producing device, or, as here shown, a cylinder 164 in which is positioned a piston 166. A spring 168 of suitable pressure, acting against the piston, is adjusted so that under the slight pressures normally built up in chamber 112, the piston will not be materially affected. However, under the high pressure delivered when the keg is empty, this piston will be en rgized sufficiently to move against theaction of spring 168, driving upwardly a pin 1'70 which extends beyond the cylinder. A sign 1'72, carried by the pin, is brought into a position at an opening 174, thereby giving indications of the condition of the apparatus. 1

An additional inlet 176 may be provided into chamber 112. This inlet, at the bottom of chamber 112, is to admit a Washing fluid into that chamber. Vent-element 108 is made in the form of a pin 178, received through a passage 180 in bottom 182 of head '74. A boss 18% on the bottom, within chamber 80, provides a seat against which may be engaged a washer 186, retained upon a flange 188 on the vent-element just slightly above tapered face 106. A spring 198, encircling pin 178 within chamber 112, is engaged against a disk 192 threaded tothe pin at this end within chamber 112. The pin preferably is loosely positioned within passage 180 and, when liquid is introduced into chamber 112 and pressure built up, the pin will be projected, with resultant opening of passage 180 into chamber 80. from chamber 112 to chamber 80, out inlet86, and also through overflow line 128, for properly cleansing the apparatus.

Other vents 194 and 196 may be provided, the

former communicating with chamber 112 at the bottom thereof, and the latter, with chamber A secondary outlet 156 from chamber 112,. which may be controlled by a suitable pet-cock Liquid then may fiow'freely at the top, for venting to the air, as required,

the respective portions of the apparatus.

Many other changes could be effected in the particular, apparatus designed, and in the methods of operation set forth, and in specific details thereof, without substantially departing,-

from theinvention intended to be defined-in the claims, the specific description herein being merely of an operative embodiment carrying out the spirit of the invention.

-What is claimed as'new and useful is:

1. In apparatus for dispensing a froth-forme ing liquid including a source of supply of the froth-forming liquid under pressure, the liquid being intendedv to be dispensed at a point removed from the supply source but where the pressure head of the liquid is still higher than atmospheric, the apparatus including means for.

determining a charge of liquid and froth in predetermined. proportional relationship, the determining means including a measuring chamber, an inlet to the chamber, means connecting inlet with the liquid supply, and float-controlledmeans for limiting the liquid inflow to the chamber, the float-controlled means being 10- cated above the chamber and applying a positive liquid head to the inlet, the float-controlled means being connected between the chamber and the connecting means.

-3. In apparatus for dispensing liquids including a source of liquid supply under pressure, the liquid being intended to be dispensed at a point removed from the supply source but where the pressure head of the liquid is still higherthan atmospheric, the apparatus including means fordetermining a quantity of the liquid, the determining means including a measuring chamber,

an inlet to the chamber, means connecting the inlet with the liquid supply, a vent from the liquid being intended to be dispensed at a point I removed from the supply source but where the pressure head of the liquid is still higher than atmospheric, the apparatus including means for determining a quantity of the liquid, the determining means including a measuring receptacle,

an inlet to the receptacle, means connecting the inlet with the liquid supply, means associated with the receptacle and the connecting means including a chamber interposed between them for venting the receptacle on flow of liquid into the'receptacle through the inlet, and flg fii" controlled outlet from said chamber.

5. In aparatus for dispensing liquids including atmospheric, the apparatus including means for determining a quantity of the liquid, the

determining means including a measuring receptacle, an inlet to the receptacle, means connecting, the inlet with the liquid supply, means associated with the receptacle and the connecting means including a chamber interposed between them for venting the receptacle on fiow of liquid into the receptacle through the inlet, an, outlet from the upper portion of said chamber, and a float in the chamber for controlling the outlet.

' 6. In apparatus for dispensing liquids including a source of liquid supply under pressure, the liquid being intended to be dispensed at a point removed from the supply source but where the pressure. head of the liquid is still higher than atmospheric, the apparatus including means for determining a quantity of the liquid, the determining means including a measuring receptacle, an inlet to the receptacle, means connecting the inlet withthe liquid supply, a chamber connected between the receptacle and the connecting means and being in open communication with both of them, the chamber having a vent, and means controlled by the level of liquid in the chamber for controlling the vent.

7. In apparatus for dispensing liquids including a source of liquid supply under pressure, the liquid being intended to be dispensed at a point removed from the supply sourcebut where the pressure head of the liquid is still higher than atmospheric, the apparatus including means for determining a quantity of the liquid, the determining means including a measuring receptacle, an inlet to the; receptacle, means connecting the inlet with the liquid supply, a plurality of chambers, one of the chambers being connected between the receptacle and the connecting means and being in open communication with both of them, the other chamber having a communication with the air, a passage between the chambers, and means forcontrolling the efiectiveness of the communication in accordance with the movement of fluid through the passage. 7

8. In apparatus for dispensingliquidsincluding a'source of liquid supply under pressure, the liquid being intended to be dispensed at a point removed from the supply source but where the pressure head of the liquid is still higher than atmospheric, the apparatus including means for determining a quantity of the liquid, the determining means including a measuring receptacle, aninlet to the receptacle, means connecting the inlet with the liquid supply, a plurality of chambers, one of the chambers being connected between the receptacle and the connecting'means and being in open communication with both of them, the other chamber having a communication with the air, a passage between the chambers, and means for controlling the effectiveness of the communication in accordance with the pressure built up in the other chamber.

9. In apparatus for dispensing liquids including a source of liquid supply under pressure, the liquid being intended to be dispensed at a point removed from the supply source but where the pressure head of the liquid is still'higher than atmospheric, the apparatus including means for determining a quantity of the liquid, the determining means including a measuring receptacle, an inlet to the receptacle, means connecting. the inlet with the liquid supply, a plurality of chambers, one of the chambers being connected between the receptacle and the connecting means and being in open com- -munication with both of them, the other chamber having a communication with the air, a

passage between the chambers, and means for ing receptacle, an inlet to the receptacle, means connecting the inlet with the liquid supply, a

plurality of chambers, one of the chambers being connected between the receptacle and the connecting means and being in open communication with both of them, the other chamber having a communication with the air, a passage between the chambers, and means for controlling the effectiveness of the passage in accordance with the amount of liquid in the chamber connected to, the receptacle.

11. In apparatus for dispensing liquids including a source of liquid supply under pressure, theliquid being intended to be dispensed at a point removed from the supply source but where the pressure head of the liquid is still higher than atmospheric, the apparatus including means for determining a quantity of the liquid, the determining means including a measuring receptacle, an inlet to the receptacle, means connecting the inlet with the liquid supply, a'1l0 plurality of chambers, one of the chambers being connected between the receptacle and the .connectingmeans-and being in open communication with both of, them, the other chamber having a communication with the air, a passage between the chambers, and means for making the passage ineffective when the amount of liquid in the chamber connected to the receptacle reaches a predetermined quantity.

12. In apparatus for, dispensing a iroth- 1'20 forming liquid including a source of supply for the froth-forming liquid under pressure, the liquid being intended to be dispensed at a point removed from the supply source but where the pressurerhead of the liquid is still higher than, atmospheric, the apparatus including means for determining a charge of liquid and froth, the determining means including a measuring receptacle, an inlet to the receptacle,

ply, a plurality of chambers, one of the chambers being connected between the receptacle and the connecting means and being in open communication with both of them, the other chamber having a communication with the air, a passage between the chambers, and means for making the passage ineffective when the amount of liquid in the chamber connected to the receptacle reaches a predetermined quantity.

13. In apparatus for dispensing a froth-form-" ing liquid including a source of supply for the liquid under pressure, the liquid being intended to be dispensed at a point removed from the supply source but where the pressure head of the liquid is still higher than atmospheric, the appa- T ratus including means for determining a charge of. liquid-and froth, the determining means including a measuring receptacle, an inlet to the receptacle, means connecting the inlet with the liquid supply, a vent from the receptacle, a plumeans connecting the inlet with the liquid supving liquid including a source of supply for the rality of chambers arranged one above the other, the lower chamber being connected between the vent and the connecting means and being in i open communication with both of them, the upper chamber having a communication with the air, a passage between the chambers, and a float valve for making the passage ineffective when .the amount of liquid in the lower chamber reaches a predetermined quantity.

14. In apparatus for dispensing airoth-formliquid under pressure, the liquid being intended to be dispensed at a point removed from the supply source but where the pressure head of the liquid is still higher than atmospheric, the apparatus including means for determining a charge of liquid and froth, the determining means including a measuring receptacle, an inlet to the receptacle, means connecting the inlet with the liquid supply, a vent from the receptacle, a plurality of chambers, one of the chambers being connected between the ventand the connecting means and being in opencommunication with both of them, the other chamber having a communication with the air, a passage between the chambers, and a float valve for making the passage ineffective when the, amount of liquid in the chamber connected to thereceptaclereaches a predetermined :quantity, -.the,' chambertconnected iliquidis 1 still higher-than atmospheric, the apparatus-including means for wdeterminingia charge ofiliquid and froth the determining ,gm'eans ineluding a- -measuring 1receptacle,-- an inlet to the receptaclavmeans :connectingdt-he inlet with the liquid-supple aiventi from thereceptacle;"a plurality. of 1 chainmberaw one iof the" chambers being connected between-the ventnand r the? connecting means and. being-sin -lopenucommunication with both'of ,them;tthe;other!.chambenhaving a communication ..with. the air,- r'a' passages -between the ichamherar andzaa float. valve for making the .passageinefiectivewhen theamount of liquid in the chamber connected to =the receptacle-reaches a. predeterminedquantity, .the; connection from the=.vent tolthewchamberiopening ihto the upper portiomof thechamber.e.'s.'::;,,-/,ti;,

:16; In apparatus for dispensing atfroth-formliquid including rat-source ofasupply' for the liquid, under pressure, the liquid being intended toabe dispensed.atwaiqooint removed from the supply source but-where the pressure head ofthe liquidis still higher than-atmospheric; the apparatus including means for determining'acharge of liquid" and froth; -"the--dete1-mining-' m' eans including "a measuring receptacle an-'inlet"to tlie receptacle, means connectingwliednlet the liquid supply,"aventfroiii"thef'receptacl' apliiof being a t nunication w h he t e; amountiiof liquicll in the ,chamber connected to: the receptacle ;-reaches .a: prcdeterminediquantity, theaconnection: drom :the vent toizthe.chambenopeningxinto -the upper portion-sot the chamber above the level of *liqu-id in said chamber when the float makes the passage ineffective.

17; In apparatus for dispensing a froth-forming liquid including a source of supply for the liquid under pressure, the liquid being intended to be dispensed at a point removed from the supply source but where the pressure head of the liquid is still higher than atmospheric, the apparatus including means for determining a charge of liquid and froth, the determining means including a measuring receptacle, an inlet to the receptacle, means connecting the inlet with the liquid supply, a vent from the receptacle, a plurality of chambers, one of the chambers having a conduit leading to and being in open communication with the connecting means, the other chamber having a communication with the air, a passage between the chambers, means for controlling the effectivenessof the communication, a fioat valve for making the passage ineffective when the amount of liquid in the chamber connected to the receptacle reaches a predetermined quantity,. and a connection from the vent to the chamber and extending down into the chamber to a position 100 just above the levelof liquid in said chamber when the float makes the passage ineffective. I r p atus o vd s e ea f o horm- 1 gsli quid rincluding-a sourcesofrsupply-cforr-the liquid-Mnderspressure, the.'liquidrbeing intended itoabe dispensed;- at aapoint,removedefromsthe supply source lgutawheretthe,- pressure:;head cf ,the liquid still, higher.-.-than: atmospheric,

eluding,.meansafomdeterminin v,q-a ehargellof liquid and; froth, theadetermimng mcansgincluding. ameasuring receptacle, aninlet t o -,,the.-,r eceptac1 e, means aconnectingsthe, inlet ,withi tha liquid supply? a ,vent from-the receptaole, a plurality, ,otcchambers, one .of the. chambers, having: a conduit; leading to and beingiin open c mmunication with the. connecting means, the othenchamber; havingacommunication with ,the,-air,-anassage betweentha chamhers means ion-contro li ,theeffe tiv ness .of -the communication in accordance with the pressure built ,ua-intnachamher. hayin communication with th.,,...a. r, auiioe valve. or maki eithe. pa age i ef cctiveawh n th lamaunt of.,=1.iq id,,in the cham er aqnne ted tc (th ,irecentaclehreaches ptc tsrminedaua tit a d .aconnection rom t o haaha be andrxtend n down th t e em ,nositiondu .ab retthe leyel i 1ui... .1 aidch mbernwhen the loa esath Pa a inefi c i -r -;ln a 9a atus orid pensin to ...,si s en ed.at aip intire qved su pl .sisur erb tswh re the P e ure; al uid s, st hi her than. a m sphe.

ap arat inq din nme 1t.--,.deie rmi f isiu d, emana e; tn;-

g m n a iladiaa a lin su i arereetatl an the receptacle, means, connecting the, in let:wit ithali iidsupp y, avent .f Qm;the.-rec ptacle -a D uraIitypiphamba onetofethe chambers havingi a conduitaleading .toeandzbeingcin ,open communication; with-the connecting" means, therotherechamber having a communication with :thmair a passageabetween the-chambers, means 1 5 foncontrollingthe efiectiveness of the 'c'ommun- =ication-in accordance with 'the pressure built up in th ch'amber'having communication-with 'the' air, a valve'for niaking'the passage inei'fectWr a-P fioat the 'ch'amber for op'era tiii'g tl'ie pressure head of the liquid is still higher than atmospheric, the apparatus including means for determining a quantity of the liquid, the determining means including a measuring receptacle, an inlet to the receptacle, means connecting the inlet with the liquid supply, and means associated with the receptacle and the connecting means including a chamber interposed between them for venting the receptacle on flow of liquid into the receptacle through the inlet.

ROY JACKSON. 

